docs: def set_security_settings(self,
                                encrypted_ephemerals=None,
                                customer_ssh_key=None,
                                persistent_security_group=None):
          """
          Kwargs:
  
          `encrypted_ephemerals`: Encrypt the ephemeral drives on the instance.
  
          `customer_ssh_key`: SSH key to use to login to the instances.
          """
          self.security_settings['encrypted_ephemerals'] = encrypted_ephemerals
          self.security_settings['customer_ssh_key'] = customer_ssh_key
          self.security_settings['persistent_security_group'] = persistent_security_group